[alsa-devel] [PATCH 2/2] ASoC: Codec: wm8962: declare ALC Coefficients as 4 separate registers

[Mark Brown]

On Tue, Oct 20, 2015 at 11:47:12AM +0900, Jiada Wang wrote:
> As ALC2 register is volatile, declare it as one of ALC Coefficients
> register together with other non-volatile registers will cause issue,
> in case wm8962 has enter suspend mode, and cache_only flag is set,
> any attempt to read from ALC2 will fail.
> 
> Instead of declaring one ALC Coefficients register which contains
> ALC1 ~ ALC3 and Noise Gate, this patch declares 4 separate registers,
> so that regmap can handle these registers differently based on their
> classification.

In addition to the issue with the ABI change that Charles raised this
also doesn't entirely fix the issue in that we still have a control that
is going to give an error in suspend mode.  Charles' suggestion seems
like it's more likely to be helpful to users.
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